Index: lib/pki_x509.h
--- lib/pki_x509.h.orig
+++ lib/pki_x509.h
@@ -169,7 +169,7 @@ class pki_x509 : public pki_x509super
 		bool importTaKey(const QByteArray &takey);
 		QList<int> ossl_verify() const;
 		bool check_ca() const;
-		QList<X509_PURPOSE *> purposes() const;
+		QList<const X509_PURPOSE *> purposes() const;
 		int name_constraint_check(pki_x509 *issuer) const;
 };
 
